<template>
	<view class="cart-container" v-if="cart.length!==0">
		<!-- 收货地址区域 -->
		<my-address>
		</my-address>
		<!-- 购物车商品列表的标题区域 -->
		<view class="cart-title">
			<!-- 左侧的图片 -->
			<uni-icons type="shop" size="18"></uni-icons>
			<!-- 右侧的文本 -->
			<text class="cart-title-text">购物车</text>
		</view>

		<uni-swipe-action>
			<block v-for="(goods,i) in cart" :key="i">
				<uni-swipe-action-item :right--options="options" @click="swipeItemClickHandler(goods)">
					<!-- 商品列表区域 -->
					<my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-chagne="radioChagneHandler"
						@num-change='numChangeHandler'>
					</my-goods>
				</uni-swipe-action-item>
			</block>
		</uni-swipe-action>

		<!-- 自定义结算组件 -->
		<my-settle></my-settle>
	</view>
	<view class="empty-cart" v-else>
		<image src="/static/cart_empty@2x.png" class="empty-image" mode=""></image>
		<text class="tip-text">空空如也~~</text>
	</view>
</template>

<script>
	// 导入 mixin 模块
	import badgeMix from '@/mixins/tabbar-badge.js'
	import {
		mapState,
		mapMutations
	} from 'vuex'
	export default {
		// 将 badgeMix 混入到当前的页面中进行使用
		mixins: [badgeMix, ],
		computed: {
			...mapState('m_cart', ['cart'])
		},
		data() {
			return {
				//滑动删除
				options: [{
					text: '删除',
					style: {
						backgroundColor: '#c00000'
					}
				}]
			};
		},
		methods: {
			...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
			// 商品的勾选状态发生了变化
			radioChagneHandler(e) {
				// console.log(e) // 输出得到的数据 -> {goods_id: 395, goods_state: false}
				this.updateGoodsState(e)
			},
			// 商品的数量发生了变化
			numChangeHandler(e) {
				this.updateGoodsCount(e)
			},
			// 点击了滑动操作按钮
			swipeItemClickHandler(goods) {
				this.removeGoodsById(goods.goods_id)
			}
		}
	}
</script>

<style lang="scss">
	.cart-container {
		padding-bottom: 50px;
	}

	.cart-title {
		height: 40px;
		display: flex;
		align-items: center;
		padding-left: 5px;
		border-bottom: 1px solid #eee;

		.cart-title-text {
			font-size: 14px;
			margin-left: 10px;
		}
	}
	.empty-cart{
		display: flex;
		flex-direction: column;
		align-items: center;
		padding-top: 150px;
		.empty-image{
			width: 100px;
			height: 100px;
		}
		.tip-text{
			font-size: 12px;
			color: #999;
			margin-top: 15px;
		}
	}
</style>
